[U-Boot] [PATCH 2/2] sunxi: defconfig: Sunchip CX-A99: Raise CPU voltage and clock frequency

[Rask Ingemann Lambertsen]

This patch uses the AXP808 support to raise the Cortex-A7 core voltage
from the power-on default of 0.9 V to 1.02 V and increases the clock
frequency from the default 1008 MHz to 1200 MHz. This is the maximum clock
frequency listed in the vendor's sys_config.fex file.

Signed-off-by: Rask Ingemann Lambertsen <rask at formelder.dk>
---
This patch goes on top of "ARM: sunxi: Add defconfig for Sunchip CX-A99".

FWIW, I seem to get away with

CONFIG_SYS_CLK_FREQ=1296000000
CONFIG_AXP_DCDCA_VOLT=1100

but neither "Allwinner UltraOcta A80 Datasheet" (revision 1.3) nor 
"Allwinner A80 User Manual" (revision 1.3.1) say anything about the
supported clock frequencies.

 configs/Sunchip_CX-A99_defconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configs/Sunchip_CX-A99_defconfig b/configs/Sunchip_CX-A99_defconfig
index 7530d7d..3b760d8 100644
--- a/configs/Sunchip_CX-A99_defconfig
+++ b/configs/Sunchip_CX-A99_defconfig
@@ -4,6 +4,7 @@ CONFIG_MACH_SUN9I=y
 CONFIG_DRAM_CLK=600
 CONFIG_DRAM_ZQ=3881915
 CONFIG_DRAM_ODT_EN=y
+CONFIG_SYS_CLK_FREQ=1200000000
 CONFIG_MMC0_CD_PIN="PH17"
 CONFIG_MMC_SUNXI_SLOT_EXTRA=2
 CONFIG_USB0_VBUS_PIN="PH15"
@@ -17,6 +18,7 @@ CONFIG_SPL=y
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
+CONFIG_AXP_DCDCA_VOLT=1020
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_SPL_ISO_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set
-- 
2.10.2